This is based on several factors:
* Visual appearance: The phone in the movie closely resembles the Nokia E71 in terms of its overall design, size, and keypad.
* Time period: The movie is set in 2008, which is around the time the Nokia E71 was released.
* Popularity: The Nokia E71 was a popular business phone during that era, making it a realistic choice for a character like Bryan Mills.
However, it's important to note that there might be some discrepancies between the actual model used in the movie and the Nokia E71. The film might have used a similar-looking phone for filming purposes.
Ultimately, while we can't definitively confirm the exact model, the Nokia E71 is the most likely candidate based on the available evidence.